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Planet Labs image of the Brumadinho tailings dam failure

from American Geophysical Union

There are a few points to note here. First, the central portion of the dam has failed catastrophically, creating a high mobility flow. In fact, very little of the dam itself is intact. Second, the compromised smaller dam to the west of the main failure can also be seen. The toe has scoured out; clearly this needs careful monitoring but the retained volume is not very large. Third, there is a substantial volume of tailings left within the pond that now has not retention in place. These tailings can mobilise in heavy rainfall, so careful management is needed. more

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